dmaengine: Fix double increment of clientcount in dmachan_get()
This is an automated ID intended to aid in discovery of potential security vulnerabilities. The actual impact and attack plausibility have not yet been proven. This ID is fixed in Linux Kernel version v5.4.231 by commit 18dd3b30d4c7e8440c63118c7a7b687372b9567f, it was introduced in version v4.0 by commit d2f4f99db3e9ec8b063cf2e45704e2bb95428317. For more details please see the references link.